Propelling device for boats



W. H. LING PROFELLING DEVICE FOR BOATS Mar. 20,' 1923.

5 sheets-sheet: l.

Filed Feb. 5, 1922 .m llllllnlllumlrlllll VII ATTORNEY WITN ESSE 5.'

Mar. 2G, E923. l VV.PL LUHG PROPELLING DEUGE FOR BOATS Filed EQb- 5; M3258 5 sheets-sheet 2 Mez/[Mig wlmassss;

, BY @www ATTORNEY Mar. 20, 1923. f

w. H. LING PROPELLING DEVICE FOR BOATS Filed Feb. 5, 1922 3 sheets-sheet 5 WITN ESSE-5: AITORMl-Y outwardly projecting brackets there is an arm `ously bifurcated to provide spaced arms 24 and which has a tongue 25 arranged between th'e arms 24. Between the arms 24 and the tongue .25 there is journaled a shaft 26 provided with rollers 27, and between the arms, below the tongue 2b there are two spaced stub shafts 28 on each of which is journaled a roller 29.

On the bottom 2 of the vessel at Y the outer end and approximately in a line with the center of each of the housings 4 there is bolted or otherwise secured a depending bracket 3G. To each of vthese brackets 30 there is pivoted,as at 3l an angle lever. The normally vertical arm of each of the levers is, for distinction, indicated by the numeral 3Q and the second angle arm by the numeral The arm is T-shaped in cross section and in reality is in the nature of a track, the same being received vbetween the spaced pairs of rollers 27 and 29, as clearly illustrated/in Figure 6 of the drawings. Between the arms 32 and 33 there is a brace connection 34. The arm 32 may also be in the nature of a T-iron if desired, but the same has the portion thereof extending beyond the brace 34 round in cross section, the same forming a shaft for the knuckles 35 of the pairs of cooperating propeller blades 36, The lower end of the shaft 37 of the angle lever is headed, as at 38.

f The vertical arm 32 of each of the angle levers, above the propeller blades 36 has keys or feathers 39 which are received in keyways in a collar 40, the said collar having'its opposed ends provided with laterally projecting segmental extensions 41 respectively. Each collar has loosely connected thereto by means 42 a rod 43, and pivotally secured to each rod there is a link 44 that passes through a. stuliing box 45 in the bottom 2 vof the vessel l. Bolted or otherwise secured to the bottom l, opposite each of the links 44 there is an upstanding bracket 46. Each bracket has pivoted thereto, as at 47 a link 48, and also secured to the pivot or on the opposite side of each of the said 49 that is pivoted, as at 50, one to each of the links 44. Loosely secured to the lower end of each of the opposed pairs of links 48 there is a cross rod 5l. To the longitudinally opposed cross rods 51 there are loosely connected rods 52.

One of the arms 49 is provided with a lever- .extension 53, and if desired, the lever may be provided with a spring influenced pawl to enagge with a suitable rack bar. By operating the and all ofthe links 48 will be simultaneoperated, so that a pull, say in an upward direction will be 'exerted upon the rods 43 which will move the collars 37 upwardly on the vertical arms of 'the angle lever 53 all of the arms 49- ifiaeefri levers to bring the segmental blocks 44, which form the obstructing elements for the propeller blades, above the said propeller blades. An opposite movement of the level` will bring the blocks 4l downwardly and into contacting engagement with either the front or rear faces of the respective pairs of propeller blades. ln this manner it will be apparent that the vessel may' be propelled either forwardly or rearwardly without reversing the turning of the engine or propelling shaft lt will be further appar-V ent that by holding the lever in its first mentioned position that the obstructing or' holding blocks 4l will be raised above the propeller blades so that the rocker levers may be operated onthe turning of the shaft 3 without the propeller blades acting on the water, which is an especially desirable feature of the construction, inasmuch as such arrangement permits of the idling of the propellers without halting the operation of the propelling shaft.

It is thought that the foregoing description, when taken in connection with the drawings will fully set forth the construction, operation and advantages of the improvement to those skilled in the art to which such inventions relate, but it is thought necessary to state that the nature of the invention is such as to render the same susceptible to changes in size, proportion, material employed and in other details of construction, and understood that I am entitled to all such changes from the illustrated embodiment herein set forth as fall within the scope of what I claim.

Having described the invention, I claim l. In a boat propelling means, a shaft constantly rotating in one direction, angle members pivoted to the bottom of the boat, a pair of propeller blades hingedly secured to each angle member, means between the shaft and angle members for imparting a reciprocatory movement of the latter from the former, means slidable on the angle members for contacting engagement with either of the opposed faces of the blades for permitting the blades to close together in eitherv of two directions without reversing the shaft or interfering with the reciprocation of the members. A n

2. In a boat propelling means, a shaft constantly rotating in one direction, angle members pivotally secured to the bottom of a boat, a pair of propeller blades hingedly secured on each member, means between the shaft and membersfor imparting a reciprocatory movement to the latter, means on the members in contacting engagement with one of the faces of the blades for holding the blades against turning toward each other, said means susceptible for engagement with the opposite faces of the blades, and said one of the arms of each of said angle levers, pairs of propeller blades hingedly secured to each angle lever, segmental blocks slidable on each angle lever, means for moving the same whereby to engage either of the op posed faces of the blades to hold the same against swinging toward each other in one direction and for movement above the blades for permitting of the free swinging of the blades toward each other in either direction without interfering with the reeiproeation of the angle levers.

In testimony whereof I aiX in signature. WILLIAM LiNG. 

